If you drop an item on top of a chest and a hopper is underneath the chest, the item isn't picked up
What I expected to happen was...:
The item should get picked up, because a chest isn't higher than a block of farmland, and if you replace the chest with farmland the item gets picked up
What actually happened was...:
The item didn't go into the hopper
Steps to Reproduce:
1. Put a chest on top of a hopper and drop an item on top of it
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The hopper is probably trying to pull from the chest too.

`This might be caused by the fact that the chest has an inventory, and therefor the hopper doesn't perform the in-world pulling, similar to when a full block covers the hopper. For performance maybe. Not sure.
Probably intended, see MCPE-80555, which describes the opposite and was fixed.
Can confirm in 21w13a.
Same issue with MC-8864

WAI, for the same reason as MC-8864 (see ProfMobius's comment).
Can confirm that this is an issue. If hoppers are able to pick up items that are on top of farmland, they should be able to do this with chests. Chests are 1 pixel smaller than farmland therefore confirming that this is a problem.